CN109672019B - Terminal MIMO antenna device and method for realizing antenna signal transmission - Google Patents
Terminal MIMO antenna device and method for realizing antenna signal transmission Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0025—Modular arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
Abstract
The invention discloses a terminal MIMO antenna device and an antenna signal transmission method, and relates to the 4G wireless communication technology. The invention discloses a MIMO antenna device, at least comprising: the antenna comprises a main board 1, wherein two end areas of the main board 1 are respectively provided with a group of antenna radiation units, and a middle area of the main board 1 is provided with a metal ground unit; a group of antenna radiation units on one end area of the main board 1 comprises a top layer radiation subunit 61 and a bottom layer radiation subunit 63 which are arranged on the end area; another group of antenna radiation units on the other end area of the main board 1 comprises a top layer radiation subunit 62 and a bottom layer radiation subunit 64 which are arranged on the end area; the metal ground unit on the middle area of the main board 1 comprises a top layer metal ground 2 and a bottom layer metal ground 3, and a first feeding port 4 and a second feeding port 5 are arranged on the bottom layer metal ground 3.
Description
Technical Field
The present invention relates to a 4G wireless communication technology, and in particular, to a terminal MIMO (Multiple Input Multiple Output) antenna apparatus and an antenna signal transmission method.
Background
For 4G wireless communication technology, LTE technology can provide faster rates and better multimedia services. Meanwhile, people have higher and higher requirements for high efficiency and portability of wireless terminal equipment, and therefore, antenna technologies of various communication terminals have also been greatly improved. Since the physical size of the antenna radiator is related to the resonant frequency, and the functions of the wireless terminal are diversified at present, the terminal is thinned, which directly results in the limited environment left for the antenna to be smaller and smaller, and the integration, miniaturization and broadband of the antenna are inevitable development trends of the antenna device.
Among LTE technologies, MIMO (Multiple Input Multiple Output) is the most critical technology. Since mobile terminal devices are generally small in size and the spacing between antennas is small, it is difficult to achieve good isolation and low correlation coefficient. Therefore, how to ensure that the antenna has a working state with high performance such as miniaturization, broadband and high isolation in a wireless mobile terminal with a small size is a problem to be solved urgently.
In addition, the industrial production has higher requirements on cost, production stability, consistency and precision. The terminal antenna produced by the LDS or the cradle method has a relatively high cost, and although it has certain advantages in space utilization and internal device interference resistance, in some terminal products, the cost factor occupies a more important position in diversified product competition, and at this time, the low cost advantage of the PCB antenna is very important.
Chinese patent No. CN201210107190 discloses a mobile phone antenna structure supporting LTE MIMO technology. The MIMO antenna comprises a metal ground, a main antenna and a diversity antenna. The antenna is a high-performance LTE MIMO antenna capable of covering low frequency bands and is suitable for being placed and installed on mobile terminals such as mobile phones. However, the invention has the following disadvantages: the antenna elements are all arranged on the antenna support, so that the antenna structure protrudes out of the dielectric substrate, the space occupancy of the antenna is increased, the height is high, and the integration level is low; secondly, the antenna structure is high in processing cost, and the competitiveness of the antenna structure is reduced; and thirdly, the size of the antenna is large, the length of the main antenna metal wire is 1/4 of the low-frequency resonance length, and the bandwidth of the diversity antenna is narrow.
In addition, in the existing MIMO technology, in order to implement an LTE antenna with excellent performance, a lot of research works are performed by multiple companies and multiple research and development teams, and the proposed methods and structures include the following:
first, a decoupling technique is employed. This technique adds a decoupling network between the two antennas, consisting of two transmission lines and several lumped parameter elements. However, this method has several disadvantages: firstly, excessive PCB space is occupied, and the network needs to penetrate through the whole PCB, which is not allowed in the actual design; secondly, the method can only realize good isolation and low correlation in one narrow frequency band, and cannot realize good isolation and low correlation in a plurality of wide frequency bands simultaneously.
Second, a high isolation between antennas is achieved using a neutral line technique. A transmission line is additionally arranged between two antennas which are close to each other, the transmission line can neutralize coupling energy between the antennas, and high isolation is achieved. However, the disadvantages of this method are also evident: firstly, high isolation can be realized only in a narrow frequency band; secondly, the method is not suitable for multi-band operation, high isolation can be realized in a narrow frequency band by adopting the method, but the isolation is deteriorated in other frequency bands. Moreover, after the neutral line technology is adopted, the two antennas are still symmetrical, and the radiation directions are still close to each other, so that the problem of the envelope correlation coefficient of the low frequency band may still be solved.
Thirdly, an electromagnetic metamaterial antenna is adopted. The technology adopts two electromagnetic metamaterial technologies to manufacture the antenna, so that the size of the antenna is small. But the technology is difficult to realize multi-band operation, and the radiation efficiency of the antenna in the designed frequency band is low.
Fourth, a method of side placement of diversity antennas is used. The main antenna is placed at the end of the long side of the board and the diversity antenna is placed at the side of the board. The radiation directions of the two antennas are different, so that high isolation and low correlation coefficient between the antennas are realized, and the radiation efficiency is good. However, this method requires almost all of the side space, and many times, handset manufacturers cannot provide this space for diversity antennas, which limits the range of applications of this method.
Disclosure of Invention
The present disclosure provides a terminal MIMO antenna apparatus and an antenna signal transmission method, which can solve the technical problem in the prior art that a plurality of wideband sections cannot work simultaneously with a limited size.
Disclosed herein is a terminal multiple-input multiple-output (MIMO) antenna apparatus, including at least:
the antenna comprises a main board 1, wherein two end areas of the main board 1 are respectively provided with a group of antenna radiation units, and a middle area of the main board 1 is provided with a metal ground unit;
the group of antenna radiation units on one end area of the main board 1 comprises a top layer radiation subunit 61 and a bottom layer radiation subunit 63 which are arranged on the end area;
another group of antenna radiation units on the other end area of the main board 1 comprises a top layer radiation subunit 62 and a bottom layer radiation subunit 64 which are arranged on the other end area;
the metal ground unit on the middle area of the main board 1 comprises a top layer metal ground 2 and a bottom layer metal ground 3, and a first feeding port 4 and a second feeding port 5 are arranged on the bottom layer metal ground 3.
Optionally, in the above antenna apparatus, the radio frequency signal on the main board is fed into the bottom-layer radiating subunit 63 and the bottom-layer radiating subunit 64 through the first feeding port 4 and the second feeding port 5 on the bottom-layer metal ground 3, respectively, so that the bottom-layer radiating subunit 63 and the bottom-layer radiating subunit 64 excite an operating current, which is coupled to the top-layer radiating subunit 61 and the top-layer radiating subunit 62.
Optionally, in the antenna apparatus, the top radiation subunit 61 includes a low-frequency radiator 611, a resonant network 612 and a short-circuit branch 613;
the bottom layer radiation subunit 63 comprises a non-frequency-dependent monopole radiator 631 and a first radiation patch 632.
Optionally, in the antenna apparatus, the low-frequency radiator 611 is a U-shaped loop, which forms a loop-like loop and exhibits a magnetic coupling radiation characteristic.
Optionally, in the above antenna apparatus, the top layer radiation subunit 62 includes a second radiation 621, a third radiation patch 622, and a fourth radiation patch 623, where a gap is left between the second radiation 621, the third radiation patch 622, and the fourth radiation patch 623, and the second radiation 621 is connected to the top layer metal ground 2 through the first matching network 8.
Optionally, in the above antenna apparatus, the bottom radiation subunit 64 includes a fifth radiation patch 641 and a sixth radiation patch 642, where the fifth radiation patch 641 is connected to the sixth radiation patch 642 through a second matching network 9.
Optionally, in the above antenna device, the fifth radiation patch 641 and the sixth radiation patch 642 are connected to form a galvanic radiation characteristic.
Optionally, in the above antenna device, the top metal ground 2, the top radiating subunit 61 and the top radiating subunit 62 are located together in one printed circuit layer of the main board 1;
the bottom metal ground 3, the bottom radiating subunit 63, the bottom radiating subunit 64, the first feeding port 4 and the second feeding port 5 are co-located on another printed circuit layer of the motherboard 1.
Also disclosed herein is a signal transmission method of the terminal multiple-input multiple-output MIMO antenna apparatus according to claims 1 to 8, comprising:
radio frequency signals on the main board of the terminal equipment are respectively fed into the bottom layer radiating subunit 63 of the first group of antennas and the bottom layer radiating subunit 64 of the second group of antennas through two feeding ports of the MIMO antenna device, so that the bottom layer radiating subunit 63 and the bottom layer radiating subunit 64 excite working currents, and the working currents are coupled into the top layer radiating subunit 61 of the first group of antennas and the top layer radiating subunit 62 of the second group of antennas.
Optionally, the method further includes:
the coupled working current enters the resonant network through the low frequency radiator in the top radiating subunit 61 of the first group of antennas, and then flows into the metal ground 1 through the short-circuit branch to form a complete resonant circuit.
Optionally, in the above method, the low-frequency radiator 611 in the top-layer radiating subunit 61 is a U-shaped loop, which forms a loop-like loop and exhibits a magnetic coupling radiation characteristic.
The application provides a PCB printing miniaturization MIMO antenna scheme capable of meeting the condition that terminal equipment covers LTE full frequency bands. Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. the planar antenna structure directly printed on the substrate reduces the size, simplifies the process and reduces the cost.
2. This application introduces the radiation inductance, breaks through 1/4 wavelength radiation restrictions, improves series resonance circuit's radiation resistance simultaneously, realizes LTE full-band impedance matching and high radiation efficiency on miniaturized basis.
3. This application separates high low frequency radiation main part, and main antenna high frequency realizes the broadband through adopting non-frequency conversion monopole antenna, realizes connecting through the LC series resonance circuit that adopts the low pass between the high low frequency, can realize that high low frequency is nimble adjustment respectively.
4. The main antenna adopts magnetic dipole radiation, auxiliary antenna dipole radiation, main and auxiliary antenna radiation directional diagrams are complementary, the maximum direction is orthogonal, and the isolation is improved.
Drawings
Fig. 1 is a schematic structural diagram of an antenna device of a terminal device according to an embodiment of the present invention;
fig. 2 is a detailed structural diagram of an antenna topology unit of a terminal device according to an embodiment of the present invention;
fig. 3(a) is a detailed top-layer structural diagram of a main antenna of a terminal device according to an embodiment of the present invention;
fig. 3(b) is a detailed bottom-layer structural diagram of a main antenna of a terminal device according to an embodiment of the present invention;
fig. 4(a) is a detailed top-level structural diagram of a diversity antenna of a terminal device according to an embodiment of the present invention;
fig. 4(b) is a detailed bottom-layer structural diagram of a diversity antenna of a terminal device according to an embodiment of the present invention;
fig. 5 is an equivalent circuit diagram of a main antenna of a terminal device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of independent tuning of high and low frequencies of a main antenna of a terminal device according to an embodiment of the present invention;
fig. 7 is a diagram of the radiation efficiency of the main antenna of the terminal device implemented by the present invention;
fig. 8 is a graph of the radiation efficiency of a diversity antenna of a terminal device embodying the present invention;
fig. 9 is a diagram of isolation of the main antenna and the diversity antenna of the terminal device implemented in accordance with the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in further detail with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
The present embodiment provides a terminal MIMO antenna apparatus, as shown in fig. 1, which mainly includes a main board 1, the main board is divided into two end regions and a middle region, the middle region is a metal ground unit, and is mainly used for circuit conduction, and the main board can be divided into a top metal ground 2 and a bottom metal ground 3, and a first feeding port 4 and a second feeding port 5 are disposed on the bottom metal ground 3. And two end regions (also called two-end metal-free regions) of the main board 1 are respectively provided with a group of antenna radiation units 6. One set of antenna radiating elements at one end region includes a top radiating sub-element 61 disposed in that region and a bottom radiating sub-element 63 disposed in that region. The set of antenna radiating elements in the other end region includes a top radiating subunit 62 disposed in that region and a bottom radiating subunit 64 disposed in that region, as shown in fig. 2.
The antenna device has the following functions:
in the transmitting process, radio frequency signals on the main board of the terminal device are fed into the first bottom radiating element 63 and the second bottom radiating element 64 through the first feeding port 4 and the second feeding port 5, respectively, so that the first bottom radiating element 63 and the second bottom radiating element 64 excite working currents, and the working currents are coupled into the first top radiating element 61 and the second top radiating element 62.
The top radiation subunit 61 may include a low frequency radiator 611, a resonant network 612, and a short circuit branch 613;
the bottom layer radiation element 63 comprises a non-frequency-dependent monopole radiator 631 and a first radiation patch 632.
That is, the low-frequency radiator in the first radiation unit 61 on the top layer is equivalent to a series resonant circuit, the resonant network is a parallel resonant circuit, and the current enters the resonant network through the low-frequency radiation line and then enters the metal ground through the short-circuit branch, so as to form a complete resonant circuit.
Optionally, the low frequency radiator 611 is a U-shaped loop, forming a loop-like loop, exhibiting magnetically coupled radiation characteristics.
The top radiation unit 62 comprises a second radiation patch 621, a third radiation patch 622 and a fourth radiation patch 623, which are spaced apart from each other, and the second radiation patch 621 is connected to the top metal ground 2 through a first matching network 8.
The bottom layer radiation unit 64 includes a fifth radiation patch 641 and a sixth radiation patch 642, wherein the fifth radiation patch 641 is connected to the sixth radiation patch 642 through a second matching network 9. The fifth radiation patch 641 is connected to the sixth radiation patch 642 to form a galvanic radiation characteristic. .
The first matching network 8 and the second matching network 9 may be implemented by using one electrical component, or by using a combination of multiple identical electrical components connected in series and/or in parallel, or by using a combination of multiple different electrical components connected in series and/or in parallel. The electrical components referred to herein may include inductors and capacitors.
In practical applications, the top metal ground 2, the top radiating element 61 and the top radiating element 62 may be co-located on a printed circuit layer of the motherboard 1; the bottom metal ground 3, the bottom radiating element 63, the bottom radiating element 64, the first feeding port 4 and the second feeding port 5 may be co-located on another printed circuit layer of the motherboard 1.
In addition, the shape of the antenna radiation unit is not limited to the shape adopted in the drawings of the present embodiment, and the size of the radiation patches and the size of the gaps between the radiation patches are not limited to the size adopted in the present embodiment.
The shape of the metal-free area may be any regular or irregular shape, and is not limited to the shape adopted in the drawings of the embodiment, and the shape of the metal-free area on the top layer of the main board and the shape of the metal-free area on the bottom layer of the main board do not need to be identical.
The resonant network may be formed by one of an inductor and/or a capacitor, or a combination of several inductors, capacitor strings and/or combinations.
Moreover, the present application is not limited to the frequency band range in the embodiment of the present invention, and the size of the antenna may be adjusted according to the requirement of the operating frequency band to meet the requirement of the operating frequency band.
In addition, this embodiment further provides a signal transmission method for a MIMO antenna apparatus of a terminal, which can be implemented by the antenna apparatus, and mainly includes:
radio frequency signals on the main board of the terminal equipment are respectively fed into the bottom layer radiating subunit 63 of the first group of antennas and the bottom layer radiating subunit 64 of the second group of antennas through two feeding ports of the MIMO antenna device, so that the bottom layer radiating subunit 63 and the bottom layer radiating subunit 64 excite working currents, and the working currents are coupled into the top layer radiating subunit 61 of the first group of antennas and the top layer radiating subunit 62 of the second group of antennas.
Optionally, the coupled operating current also enters the resonant network through a low-frequency radiator in the top radiating subunit 61 of the first group of antennas, and then flows into the metal ground 1 through a short-circuit branch to form a complete resonant circuit. The low-frequency radiator 611 in the top-layer radiating subunit 61 is a U-shaped loop, which forms a loop-like loop and exhibits a magnetic coupling radiation characteristic.
Since the implementation of the above method may be based on the above antenna device, the details of the above method may refer to the corresponding description of the above device, and are not described herein again.
To further clarify the technical measures and effects of the present invention adopted to achieve the intended objects, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is noted that, for the sake of convenience of distinction, two sets of antenna radiation elements disposed in both end regions of the main board 1 are hereinafter referred to as a first antenna radiation element and a second antenna radiation element, respectively. Correspondingly, the top-layer radiating subunit 61 may also be referred to herein as a top-layer first radiating subunit 61, and the bottom-layer radiating subunit 63 may also be referred to herein as a bottom-layer first radiating subunit 63. The top radiating subunit 62 can also be referred to as a top second radiating subunit 62, and the bottom radiating subunit 64 can also be referred to as a bottom second radiating subunit 64.
An antenna device of a terminal device, as shown in fig. 1, includes a main board 1, a top metal ground 2, a bottom metal ground 3, a first feeding port 4, a second feeding port 5 and two sets of antenna radiation elements 6.
As shown in fig. 2, the first radiation unit of the two groups of antenna radiation units includes a top-layer first radiation subunit 61 and a bottom-layer first radiation subunit 63, and the second radiation unit includes a top-layer second radiation subunit 62 and a bottom-layer second radiation subunit 64.
The top first radiating subunit 61 comprises a low frequency radiator 611, a resonant network 612 and a short circuit stub 613, as shown in fig. 3 (a). The bottom layer first radiation subunit 63 includes a non-frequency-dependent monopole radiator 631 and a first radiation patch 632, and the specific structure is shown in fig. 3 (b). The low-frequency radiator 611 is a U-shaped loop, forming a loop-like loop, and exhibits a magnetic coupling radiation characteristic.
The top layer second radiation subunit 62 includes a second radiation patch 621, a third radiation patch 622 and a fourth radiation patch 623, as shown in fig. 3 (a). The bottom layer second radiation unit 64 includes a fifth radiation patch 641 and a sixth radiation patch 642, and the specific structure is shown in fig. 4 (b).
The top metal ground 2, the top first radiating subunit 61 and the top second radiating subunit 62 are located on the same printed circuit layer of the main board 1. The bottom metal ground 3, the bottom first radiating subunit 63, the bottom second radiating subunit 64, the first feed port 4 and the second feed port 5 are located on another printed circuit layer of the main board 1;
specifically, both ends of the main board 1 are metal-free areas, wherein the first metal-free area 71 (see fig. 2) includes an area where the top-layer first radiating subunit 61 is located, the second metal-free area 72 (see fig. 2) includes an area where the top-layer second radiating subunit 62 is located, the third metal-free area 73 (see fig. 2) includes an area where the bottom-layer first radiating subunit 63 is located, and the fourth metal-free area 74 (see fig. 2) includes an area where the bottom-layer second radiating subunit 64 is located.
Fig. 3(a) is a schematic view of a first metal-free region 71 according to an embodiment of the present invention. Fig. 4(a) is a schematic diagram of a second metal-free region 72 of the antenna according to the embodiment of the present invention. In the embodiment of the present invention, the first top radiating subunit 61 and the second top radiating subunit 62 are respectively located in the first metal-free area 71 and the second metal-free area 72 at two ends of the top layer of the motherboard. The shape of the first metal-free region 71 and the second metal-free region 72 may be any regular or irregular shape, and is not limited to the shape adopted in the present embodiment; fig. 3(b) is a schematic diagram of a third metal-free region 73 of the antenna according to the embodiment of the present invention. Fig. 4(b) is a diagram of a fourth metal-free region 74 of the antenna according to the embodiment of the present invention. The bottom layer first radiating subunit 63 and the bottom layer second radiating subunit 64 are respectively located in the third metal-free area 73 and the fourth metal-free area 74 at two ends of the bottom layer of the main board. The shape of the third metal free region 73 and the fourth metal free region 74 may be any regular or irregular shape, and is not limited to the shape adopted in the present embodiment. And the shape of first metal-free region 71 and third metal-free region 73 need not be identical, nor does the shape of second metal-free region 72 and fourth metal-free region 74 need to be identical.
As shown in fig. 3(a), in the embodiment of the present invention, the top-layer first radiating subunit 61 includes a low-frequency radiator 611, a resonant network 612 and a short-circuit branch 613, the low-frequency radiator 611 is connected to the short-circuit branch 613 through the resonant network 612, and the short-circuit branch 613 is connected to the metal ground located in the layer; the resonant network 612 may be formed using one of an inductor and/or a capacitor, or a combination of several numbers of inductors, capacitor strings, and/or combinations. In an alternative embodiment, the resonant network 612 may be composed of a shunt capacitor 6121 and a shunt inductor 6122. As shown in fig. 3(b), the bottom layer first radiation subunit 63 includes a non-frequency-dependent monopole antenna 631 and a first radiation patch 632 with a gap therebetween. Three metallized vias 10 are provided between the low frequency radiator 611 and the non-frequency-varying monopole antenna 632. The sub-antenna 631 may be a planar ultra-wideband non-frequency-dependent monopole antenna.
An equivalent circuit diagram of the antenna device of the terminal equipment of the present embodiment is shown in fig. 5. The low-frequency radiator 611 is equivalent to the non-frequency-varying monopole radiator 631 to a multi-radiation-inductor series array formed by radiation inductors LN and RN. The gap between the low frequency radiator 611 and the non-frequency varying monopole radiator 631 creates a coupling capacitance Cse with the first radiation patch 632. The parallel capacitor 6121 and the parallel inductor 6122 form an equivalent parallel capacitor or equivalent parallel inductors Lsh and Csh. The resonance state of the antenna device can be controlled by properly adjusting the magnitude of LN, Cse, Lsh and Csh, and the matching bandwidth and the radiation efficiency of the antenna can be properly adjusted by adjusting the RN. In implementation, the resonance characteristics and matching state can be adjusted by optimizing the size of the coupling gap between the low-frequency radiator 611 and the non-frequency-varying monopole radiator 631 of the antenna structure device, the line width and the line length of the low-frequency radiator 611, and the values of the parallel capacitor 6121 and the parallel inductor 6122, and finally, the complete coverage of the LTE bandwidth is achieved.
Fig. 6 is an equivalent circuit diagram of the high and low frequency separately tuned antenna device of the present embodiment. The low frequency radiator 611 forms a low pass filter with the non-frequency varying monopole radiator 631. The low pass filtering characteristic isolates the effects of the high frequencies of LTE so that the low frequency radiator 611 can be tuned separately. In implementation, the filtering frequency band of the low-pass filtering can be adjusted by optimizing the coupling size of the low-frequency radiator 611 and the non-frequency-varying monopole radiator 631 of the antenna structure device and the line length and the line width of the low-frequency radiator 611. By optimizing the size of the non-frequency-varying monopole radiator 631, the impedance matching of the feed port is adjusted, and finally the complete coverage of the LTE bandwidth is achieved.
As shown in fig. 4(a), the top-layer second radiation subunit 62 includes a second radiation patch 621, a third radiation patch 622 and a fourth radiation patch 623, which are spaced apart from each other, and the second radiation patch 621 is connected to the layer through the first matching network 8. The first matching network 8 may be formed by one of an inductor and/or a capacitor, or a combination of several inductors, capacitor strings and/or combinations, and in a preferred embodiment, the first matching network 8 is formed by one inductor. As shown in fig. 4(b), the bottom layer second radiating subunit 64 includes a fifth radiating patch 641 and a sixth radiating patch 642, wherein the fifth radiating patch 641 is connected to the sixth radiating patch 642 through the second matching network 9. The fifth radiation patch 641 is connected to the sixth radiation patch 642 to form a galvanic radiation characteristic. The second matching network 9 may be formed by one of an inductor and/or a capacitor, or a combination of several inductors, capacitor strings and/or combinations, and in this preferred embodiment, the second matching network 9 is formed by one inductor.
Based on the above-described antenna apparatus of the terminal device of the present invention, during the transmission process, the radio frequency signal on the motherboard of the terminal device is fed into the bottom layer first radiating subunit 63 and the bottom layer second radiating subunit 64 through the first feeding port 4 and the second feeding port 5, respectively, so that the bottom layer first radiating subunit 63 and the bottom layer second radiating subunit 64 excite the operating current, which is coupled to the top layer first radiating subunit 61 and the top layer second radiating subunit 62, wherein the low frequency radiator 611 in the top layer first radiating subunit 61 is equivalent to a series resonant circuit, the resonant network 612 is a parallel resonant circuit, and the current passes through the low frequency radiator 611, enters the resonant network 612, and then flows into the top layer metal ground 2 through the short-circuit branch joint 613, thereby forming a complete resonant matching circuit.
In implementation, the shape and size of the low-frequency radiator 611 in the antenna device structure are optimized, the shape and size of the short-circuit branch 613 in the antenna device structure are optimized, the shape and size of the non-frequency-variable monopole antenna 632 in the antenna device structure are optimized, the shape and size of each radiating patch are optimized, the positions and values of the resonant network and the two matching networks are optimized, the resonant state and the matching state of the antenna device can be adjusted, and the target bandwidth is completely covered.
One application of the antenna device of the embodiment of the present invention is listed below.
The embodiment of the invention is applied to a terminal mainboard as shown in fig. 1 and fig. 2. The main antenna (i.e. the first antenna radiating element described above, including 61 and 62) has a size of 0.04 x 0.12 x (where x is the wavelength of the lowest frequency), the diversity antenna has a size of 0.025 x 0.12 x, and a plate thickness of 1 mm.
In the simulated radiation efficiency graph of the radiation of the main antenna (i.e., the first antenna radiating element) according to the embodiment of the present invention, as shown in fig. 7, the radiation efficiency of the main antenna at the low frequency is greater than 40%, and the radiation efficiency of the main antenna at the high frequency is greater than 60%. It can be seen that the terminal antenna device covers the required LTE frequency band of 698 MHz-960 MHz &1710 MHz-2690 MHz, so that the terminal antenna device has the characteristic of high efficiency and meets the requirement of high performance of the antenna.
In the simulated radiation efficiency diagram of the radiation of the secondary antenna (i.e., the second antenna radiation unit), as shown in fig. 8, the radiation efficiency of the secondary antenna at low frequency is greater than 30%, and the radiation efficiency of the secondary antenna at high frequency is greater than 70%. The antenna covers the required LTE frequency band of 698 MHz-960 MHz and 1710 MHz-2690 MHz, so that the antenna has the characteristic of high efficiency and meets the requirement of high performance of the antenna.
In the embodiment of the present invention, the isolation between the two ports (i.e., the feeding ports 4 and 5) is greater than 15dB in the full band, as shown in fig. 9.
As can be seen from the above embodiments, the technical solution of the present application has the following effects:
1. the high-low frequency radiation main body is separated, the high frequency of the main antenna adopts a plane ultra-wide band non-frequency-change monopole antenna, namely 631 shown in fig. 3(b), broadband is realized, the low frequency of the main antenna adopts radiation inductance, namely 611 shown in fig. 3(a), the design realizes miniaturization and high efficiency, the high frequency and the low frequency realize connection through an LC series resonance loop adopting low pass, the low frequency and the high frequency are communicated at the connection part, the ultra-wide band characteristic of the high frequency is not influenced when the low frequency resonance bandwidth is adjusted, and the high-low frequency radiation main body can be flexibly adjusted according to different requirements of different models;
2. the main antenna (namely, the first antenna radiation unit) adopts annular magnetic dipole radiation, the auxiliary antenna (namely, the second antenna radiation unit) adopts a monopole electric dipole radiation mode, the main antenna and the auxiliary antenna adopt different modes, and the two antenna elements are respectively arranged at two ends of the dielectric substrate, so that the isolation is improved;
3. the planar antenna structure directly printed on the substrate reduces the volume, simplifies the process and reduces the cost.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present application is not limited to any specific form of hardware or software combination.
The above description is only a preferred example of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A terminal MIMO antenna apparatus, comprising at least:
the antenna comprises a main board 1, wherein two end areas of the main board 1 are respectively provided with a group of antenna radiation units, and a middle area of the main board 1 is provided with a metal ground unit;
the group of antenna radiation units on one end area of the main board 1 comprises a top layer radiation subunit 61 and a bottom layer radiation subunit 63 which are arranged on the end area;
the top layer radiating subunit 61 comprises a low frequency radiator 611, a resonant network 612 and a short circuit branch 613; the bottom layer radiation subunit 63 comprises a non-frequency-varying monopole radiator 631 and a first radiation patch 632;
another group of antenna radiation units on the other end area of the main board 1 comprises a top layer radiation subunit 62 and a bottom layer radiation subunit 64 which are arranged on the other end area;
the metal ground unit on the middle area of the main board 1 comprises a top layer metal ground 2 and a bottom layer metal ground 3, and a first feeding port 4 and a second feeding port 5 are arranged on the bottom layer metal ground 3.
2. The antenna device of claim 1,
radio frequency signals on the main board are fed into the bottom-layer radiating subunit 63 and the bottom-layer radiating subunit 64 through the first feeding port 4 and the second feeding port 5 on the bottom-layer metal ground 3, respectively, so that the bottom-layer radiating subunit 63 and the bottom-layer radiating subunit 64 excite working currents, and the working currents are coupled into the top-layer radiating subunit 61 and the top-layer radiating subunit 62.
3. The antenna device of claim 1,
the low-frequency radiator 611 is a U-shaped loop, forming a loop-like loop, exhibiting a magnetic coupling radiation characteristic.
4. The antenna device as claimed in claim 1 or 2,
the top layer radiation subunit 62 includes a second radiation 621, a third radiation patch 622, and a fourth radiation patch 623, wherein a gap is left between the second radiation 621, the third radiation patch 622, and the fourth radiation patch 623, and the second radiation 621 is connected to the top layer metal ground 2 through a first matching network 8.
5. The antenna device as claimed in claim 1 or 2,
the bottom radiation subunit 64 includes a fifth radiation patch 641 and a sixth radiation patch 642, wherein the fifth radiation patch 641 is connected to the sixth radiation patch 642 through a second matching network 9.
6. The antenna device of claim 5,
the fifth radiation patch 641 and the sixth radiation patch 642 are connected to form a dipole radiation characteristic.
7. The antenna device as claimed in claim 1 or 2,
the top metal ground 2, the top radiating subunit 61 and the top radiating subunit 62 are located together in one printed circuit layer of the main board 1;
the bottom metal ground 3, the bottom radiating subunit 63, the bottom radiating subunit 64, the first feeding port 4 and the second feeding port 5 are co-located on another printed circuit layer of the motherboard 1.
8. A signal transmission method of the terminal multiple-input multiple-output MIMO antenna apparatus as claimed in claims 1 to 7, comprising:
radio frequency signals on the main board of the terminal equipment are respectively fed into the bottom layer radiating subunit 63 of the first group of antennas and the bottom layer radiating subunit 64 of the second group of antennas through two feeding ports of the MIMO antenna device, so that the bottom layer radiating subunit 63 and the bottom layer radiating subunit 64 excite working currents, and the working currents are coupled into the top layer radiating subunit 61 of the first group of antennas and the top layer radiating subunit 62 of the second group of antennas.
9. The method of claim 8, further comprising:
the coupled working current enters the resonant network through the low frequency radiator in the top radiating subunit 61 of the first group of antennas, and then flows into the metal ground 1 through the short-circuit branch to form a complete resonant circuit.
10. The method of claim 9,
the low-frequency radiator 611 in the top-layer radiating subunit 61 is a U-shaped loop, which forms a loop-like loop and exhibits a magnetic coupling radiation characteristic.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965699.9A CN109672019B (en) | 2017-10-17 | 2017-10-17 | Terminal MIMO antenna device and method for realizing antenna signal transmission |
| US16/753,891 US10819398B2 (en) | 2017-10-17 | 2018-10-15 | Multi input multi output antenna device of terminal and method for realizing antenna signal transmission |
| PCT/CN2018/110224 WO2019076260A1 (en) | 2017-10-17 | 2018-10-15 | Multiple-input multiple-output antenna device for terminal and method for realizing transmission of antenna signal |
| EP18867484.0A EP3678260B1 (en) | 2017-10-17 | 2018-10-15 | Multiple-input multiple-output antenna device for terminal and method for realizing transmission of antenna signal |
| ES18867484T ES2909442T3 (en) | 2017-10-17 | 2018-10-15 | Multiple input and multiple output antenna device for a terminal and method for performing an antenna signal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965699.9A CN109672019B (en) | 2017-10-17 | 2017-10-17 | Terminal MIMO antenna device and method for realizing antenna signal transmission |
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| Publication Number | Publication Date |
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| CN109672019A CN109672019A (en) | 2019-04-23 |
| CN109672019B true CN109672019B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710965699.9A Active CN109672019B (en) | 2017-10-17 | 2017-10-17 | Terminal MIMO antenna device and method for realizing antenna signal transmission |
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| Country | Link |
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| US (1) | US10819398B2 (en) |
| EP (1) | EP3678260B1 (en) |
| CN (1) | CN109672019B (en) |
| ES (1) | ES2909442T3 (en) |
| WO (1) | WO2019076260A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11303022B2 (en) * | 2019-08-27 | 2022-04-12 | Apple Inc. | Electronic devices having enclosure-coupled multi-band antenna structures |
| CN113394548B (en) * | 2020-03-13 | 2022-10-18 | 华为技术有限公司 | Antenna and terminal equipment |
| CN111740218B (en) * | 2020-06-29 | 2021-08-06 | 维沃移动通信有限公司 | Electronic device |
| KR20220068557A (en) * | 2020-11-19 | 2022-05-26 | 삼성전기주식회사 | Antenna apparatus |
| CN112751185B (en) * | 2020-12-29 | 2022-04-08 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
| CN112803175A (en) * | 2021-02-03 | 2021-05-14 | 福耀玻璃工业集团股份有限公司 | Multifunctional vehicle-mounted combined antenna and vehicle |
| CN113540790B (en) * | 2021-04-26 | 2023-12-29 | 深圳市宏电技术股份有限公司 | MIMO antenna and electronic equipment |
| CN114421121B (en) * | 2022-03-30 | 2022-08-02 | 陕西海积信息科技有限公司 | Wearable antenna |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8164528B2 (en) * | 2008-03-26 | 2012-04-24 | Dockon Ag | Self-contained counterpoise compound loop antenna |
| KR101607131B1 (en) * | 2009-08-17 | 2016-03-30 | 삼성전자주식회사 | Multiband built-in antenn for portable terminal |
| FI20096251A0 (en) * | 2009-11-27 | 2009-11-27 | Pulse Finland Oy | MIMO antenna |
| CN102117956A (en) * | 2009-12-31 | 2011-07-06 | 智易科技股份有限公司 | Dual-frequency antenna |
| US8750798B2 (en) * | 2010-07-12 | 2014-06-10 | Blackberry Limited | Multiple input multiple output antenna module and associated method |
| CN102110900B (en) * | 2010-12-27 | 2014-07-02 | 中兴通讯股份有限公司 | Array antenna of mobile terminal and implementation method of array antenna |
| KR20130031000A (en) * | 2011-09-20 | 2013-03-28 | 삼성전자주식회사 | Antenna apparatus for portable terminal |
| CN202695725U (en) * | 2012-06-25 | 2013-01-23 | 中兴通讯股份有限公司 | Wireless equipment |
| US9007272B2 (en) * | 2012-07-19 | 2015-04-14 | Tensorcom, Inc. | Method and apparatus for the alignment of a 60 GHz endfire antenna |
| KR101378847B1 (en) * | 2012-07-27 | 2014-03-27 | 엘에스엠트론 주식회사 | Internal antenna with wideband characteristic |
| CN102983397B (en) * | 2012-11-30 | 2015-03-11 | 华南理工大学 | Small high-isolation double-notch UWB MIMO antenna |
| CN103682596B (en) * | 2013-12-05 | 2016-03-30 | 清华大学 | For broadband four antenna system of mobile terminal |
| CN104753554B (en) * | 2013-12-27 | 2017-08-15 | 启碁科技股份有限公司 | Radio-frequency unit and radio communication device |
| CN103794858A (en) * | 2014-01-18 | 2014-05-14 | 中国计量学院 | Symmetrical two-side-comb-shaped double-frequency coplane microstrip antenna |
| CN104810617B (en) * | 2014-01-24 | 2019-09-13 | 南京中兴软件有限责任公司 | A kind of antenna element and terminal |
| CN104505592B (en) * | 2015-01-14 | 2017-11-07 | 华南理工大学 | A kind of MIMO mobile terminal antennas with broadband character |
| TWI560940B (en) * | 2015-03-31 | 2016-12-01 | Wistron Neweb Corp | Radio-frequency device and wireless communication device for enhancing antenna isolation |
| CN104882677B (en) * | 2015-05-25 | 2018-01-16 | 华南理工大学 | Difference gap mimo antenna with high cmrr |
| CN105322278B (en) * | 2015-06-26 | 2018-08-17 | 维沃移动通信有限公司 | Antenna with continuous metal frame and its electronic equipment |
| US20170141465A1 (en) * | 2015-11-12 | 2017-05-18 | King Fahd University Of Petroleum And Minerals | Integrated microwave-millimeter wave antenna system with isolation enhancement mechanism |
| US10483631B2 (en) * | 2016-09-26 | 2019-11-19 | The Mitre Corporation | Decoupled concentric helix antenna |
| CN107171069B (en) * | 2017-07-03 | 2023-03-21 | 华南理工大学 | Wide-stopband filtering MIMO antenna |
-
2017
- 2017-10-17 CN CN201710965699.9A patent/CN109672019B/en active Active
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| US20200259530A1 (en) | 2020-08-13 |
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| US10819398B2 (en) | 2020-10-27 |
| WO2019076260A1 (en) | 2019-04-25 |
| ES2909442T3 (en) | 2022-05-06 |
| EP3678260B1 (en) | 2022-01-26 |
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